package com.itheima.reggie.controller;


import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.api.R;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.Result;
import com.itheima.reggie.entity.Employee;
import com.itheima.reggie.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import java.time.LocalDateTime;

@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {

    @Autowired
    private EmployeeService employeeService;

    /*
    * 员工登录
    *
    */
    @PostMapping("/login")
    public Result<Employee> login(HttpServletRequest request, @RequestBody Employee employee){ //把json格式结果封装到实体类Employee中


        //1、将页面提交的密码password进行md5加密处理
        String password = employee.getPassword();
        password = DigestUtils.md5DigestAsHex(password.getBytes());

        //2、根据页面提交的用户名username查询数据库
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(Employee::getUsername,employee.getUsername());//根据用户名username进行等值查询
        Employee emp = employeeService.getOne(queryWrapper);//getUsername在数据库中有唯一约束，所以可以使用getOne方法

        //3、如果没有查询到则返回登录失败结果
        if(emp==null){
            return Result.error("登陆失败");

        }

        // 4、密码比对，如果不一致则返回登录失败结果
        if(!emp.getPassword().equals(password)){
            return Result.error("登陆失败");
        }


       // 5、查看员工状态，如果为已禁用状态，则返回员工已禁用结果

        if(emp.getStatus() == 0){
            return Result.error("账号已禁用");
        }

        //6、登录成功，将员工id存入Session并返回登录成功结果
        request.getSession().setAttribute("employee",emp.getId());
        return Result.success(emp);
    }


    /*
    *
    * 员工退出
    * */


    @PostMapping("/logout")
    public Result<String> logout(HttpServletRequest request){
        //清理Session中保存的当前登录员工的id
        request.getSession().removeAttribute("employee");//把此属性employee移除调用removeAttribute(" ")方法
        return Result.success("退出成功");


    }




/*
* 新增员工
* */
    @PostMapping
    public Result<String> save(HttpServletRequest request,@RequestBody Employee employee){
        log.info("新增员工，员工信息：{}",employee.toString());

        //设置初始密码123456，需要进行md5加密处理
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));
       // employee.setCreateTime(LocalDateTime.now());
      //  employee.setUpdateTime(LocalDateTime.now());

        //获取当前登录用户的id
        //Long empId=(Long) request.getSession().getAttribute("employee");//getAttribute返回的都是Object的类型数据，所以要强转为Long型

       // employee.setCreateUser(empId);
       // employee.setUpdateUser(empId);
        employeeService.save(employee);
        return Result.success("新增员工成功");
    }

    @GetMapping("/page")
    public Result<Page> page(int page,int pageSize,String name){
        log.info("page={},pageSize={},name={}",page,pageSize,name);

        //构造分页构造器
        Page pageInfo = new Page(page, pageSize);

        //构造条件构造器
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper();

        //添加过滤条件
        queryWrapper.like(StringUtils.isNotEmpty(name),Employee::getName,name);

        //添加排序条件
        queryWrapper.orderByDesc(Employee::getUpdateTime);

        //执行查询
        employeeService.page(pageInfo,queryWrapper);//不需要返回，会自动封装好，因为employeeService继承了IService中的这些方法


        return Result.success(pageInfo);
    }


    /*
    *
    * 根据id修改员工信息
    * */

    @PutMapping
    public Result<String> update(HttpServletRequest request,@RequestBody Employee employee){
        log.info(employee.toString());

        long id = Thread.currentThread().getId();
        log.info("线程id为:{}",id);


        //Long empId =(Long) request.getSession().getAttribute("employee");
       // employee.setUpdateTime(LocalDateTime.now());
        //employee.setUpdateUser(empId);
        employeeService.updateById(employee);//继承自IService<T>接口方法
        return Result.success("员工信息修改成功");
    }


    /*
    * 根据Id查询员工信息
    * */
    @GetMapping("/{id}")
    public Result<Employee> getById(@PathVariable Long id){
        log.info("根据id查询员工信息...");
        Employee employee = employeeService.getById(id);

        if(employee!=null){
            return Result.success(employee);
        }
        return Result.error("没有查询到对应员工信息");
    }


}
